The Town of New Castle dates from 1791 when it split off from the neighboring Town of North Castle. A rich heritage of houses, barns and stone walls dating from Revolutionary and older times is still evident throughout town.
The town covers almost 24 square miles and encompasses the two hamlets of Chappaqua and Millwood.
A recent 2000 Census estimate of town population was 17,500.
Town life is enriched by many different organizations and a highly-rated school system, both of which are a source of community pride and strength.
Town elected officials are assisted by professional department staff and active volunteer boards and commissions.
New Castle is essentially a residential, family-oriented community with 35% of its area occupied by single family homes. Another third of the land is undeveloped or dedicated open space, giving New Castle a feeling of country living.